“Well, after PR disaster of ice-locked Copenhagen they decided naturally hot places make better backdrop. And then there’s the little matter of the luxury hotels!”

He tweeted that the conference was “a surreal mix of exciting new technologies and lunatic tax-gobbling leftist hysteria”.

Three years ago, Griffin said: "Climate change is being used to impose an anti-human utopia as deadly as anything conceived by Stalin or Mao.”

Tory Tim Yeo, chairman of the Commons environmental audit committee, said at the time: “If the future prosperity of the human race, in the face of climate change, depends on the contributions of people like Nick Griffin, there is little hope for any of us.”